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vocabulary sheet
Term
 Lesson
 Definition
Absolute Value
 1-3
 how far is the number away from 0
Additive Inverse
 1-4
 Two integers that are opposite of each other are called additive inverses. The sum of any number and its additive inverse is zero.
Algebra
 1-1
 The branch of mathematics that involves expressions with variables.
Algebraic Expression
 1-1
 A combination of variables, numbers, and at least one operation.
Coordinate
 1-3
 the number that matches on the number line.
Counterexample
 1-2
 A statement or example that shows a conjecture is false.
Define A Variable
 1-5
 Choosing a variable and a quantity for the variable to represent in an expression or equation.
Equation
 1-7
 A mathematical sentence that
contains an equals sign, =.
Evaluate
 1-1
 To find the value of an expression by replacing the variables with numerals.
Inequality
 1-3
 inequality - means symbols greater than<and less than>
Integer
 1-3
 positive and negative numbers
Inverse Operations
 1-9
 Pairs of operations that undo each other. Addition and subtraction are inverse operations. Multiplication and division are inverse operations.
Negative Number
 1-3
 it is a number less than 0
Numerical Expression
 1-2
 A mathematical expression that has a combination of numbers and at least one operation. 4 + 2 is a numerical expression.
Opposites
 1-4
 Two numbers with the same absolute value but different signs. The sum of opposites is zero.
Order of Operations
 1-4
 The rules to follow when more than one operation is used in an expression.
Powers
 1-2
 Numbers written using exponents.
Solution
 1-9
 forms a line.
Solve
 1-9
 Find the value of the variable that makes the equation true.
Variable
 1-2
 A symbol, usually a letter, used to represent a number in mathematical expressions or sentences.

Good! Make sure that all of these are in your words and not the ones from the book. Grade: 9